卷取温度对X80管线钢组织和性能的影响
Influence of Coiling Temperature on Microstructure and Properties of X80 Pipeline Steel
摘 要
在实验室450mm轧机上用控制轧制和控制冷却的方法制备了X80管线钢板,采用光学显微镜、透射电镜和力学性能试验机等研究了卷取温度对该钢显微组织和力学性能的影响.结果表明:当卷取温度在463~597 ℃范围内变化时,随着卷取温度的升高,该钢组织中针状铁素体含量增加,M-A岛更细小均匀,显微组织明显细化;在597 ℃卷取时,该钢的屈服强度达到650 MPa,抗拉强度达到790 MPa,伸长率达到30%左右.
针状铁素体
卷取温度
X80 pipeline steel
acicular ferrite
coiling temperature
Abstract
X80 pipeline steel plate was prepared by controlled rolling and controlled cooling method using a 450 mm laboratory rolling mill.The influence of coiling temperature on the microstructure and mechanical properties of the steel was investigated by means of optical microscope,TEM and mechanical property tester.The results show that when the coiling temperature increased from 463 ℃ to 597 ℃,the content of acicular ferrile(AF) in X80 pipeline steel increased,and the M-A island became finer and well-proportioned.When the coiling temperature was 597 ℃,the yield strength and tensile strength of X80 pipeline steel could be 650 MPa and 790 MPa respectively,and the elongation was about 30%.
中图分类号 TG142
所属栏目 试验研究
基金项目
收稿日期 2009/1/15
修改稿日期 2009/5/20
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备注张国柱(1984-),男,辽宁沈阳人,硕士研究生.
引用该论文: ZHANG Guo-zhu,SONG Zhi-chao,ZHANG Hong-mei,DONG Nan-nan. Influence of Coiling Temperature on Microstructure and Properties of X80 Pipeline Steel[J]. Materials for mechancial engineering, 2010, 34(2): 25～26
张国柱,宋志超,张红梅,董楠楠. 卷取温度对X80管线钢组织和性能的影响[J]. 机械工程材料, 2010, 34(2): 25～26
被引情况:
【1】牛涛,姜永文,李飞,吴新朗,武军宽, "卷取温度对0.8设计系数X80管线钢显微组织与力学性能的影响",机械工程材料 40, 89-93(2016)
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参考文献
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【3】KRAUSS G,THOMPSON S.Ferrite microstructure in continuously cooled low-and-ultra low-carbon steels [J].ISIJ International,1995,35(6):937-941.
【4】刘勤博,张红梅,江红绢,等.控制轧制对管线钢X65组织细化的影响[J].热加工工艺,2007,36(16):1-3.
【5】SMITHY,COLDRENA.High strength,ductile Mn-Mo-Nb steels with a structure of acicular ferrite[J].Met Sci Heat Treat,1976,18(1/2):59-65.
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